Home / 8,515.92-11,752.20-4,790.80

Finding the Fourth Proportional to 8,515.92, 11,752.20 and 4,790.80

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Solution

The fourth proportional to 8,515.92, 11,752.20 and 4,790.80 is: 6,611.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515.92 : 11,752.20 = 4,790.80 : x
  2. Step 2: Convert to fraction form
    8,515.92/11,752.20 = 4,790.80/x
  3. Step 3: Cross multiply
    8,515.92x = 11,752.20 × 4,790.80
  4. Step 4: Simplify right side
    8,515.92x = 56,302,439.76
  5. Step 5: Solve for x
    x = 56,302,439.76/8,515.92
  6. Step 6: Final answer
    x = 6,611.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.